PT-2025-8000 · Linux+5 · Linux Kernel+5

Shreeya Patel · Published 2022-03-21 · Updated 2026-04-22 · CVE-2022-49072

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition issue exists due to the exposure of GPIO chip irq members before they are fully initialized. This can lead to a kernel NULL pointer dereference, as observed with the gc->irq.domain variable accessed through the I2C interface in gpiochip to irq() before initialization by gpiochip add irqchip(). The issue is related to the gpiochip to irq() function and the gc->irq.domain variable.

Recommendations To resolve this issue, restrict the usage of GPIO chip irq members before they are completely initialized. As a temporary workaround, consider disabling the gpiochip to irq() function until a patch is available. Additionally, restrict access to the gc->irq.domain variable to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_16880

BDU:2025-06043

CVE-2022-49072

RHSA-2023:2458

RHSA-2023_2458

USN-8098-1

USN-8098-10

USN-8098-2

USN-8098-3

USN-8098-4

USN-8098-5

USN-8098-6

USN-8098-7

USN-8098-8

USN-8098-9

USN-8107-1

USN-8201-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Red Hat

Red Os

Ubuntu

References · 69

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49072.json · Exploit
• https://osv.dev/vulnerability/USN-8098-5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23406 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8098-10 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8098-4 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49072 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47599 · Vendor Advisory
• https://git.kernel.org/stable/c/f8dea54f74cae8c2e4d7b2952e8fed7743a85c87 · Patch
• https://ubuntu.com/security/CVE-2025-37849 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49072 · Security Note
• https://ubuntu.com/security/CVE-2026-23410 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8098-8 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8098-5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49072 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49046 · Vendor Advisory